His high-pitched shrieks, whoops and howls echo throughout the rink any time he scores, or even steals the puck from a teammate during practice. Sometimes the squawks continue into the dressing room, as you can commonly hear Jonathan Marchessault still celebrating as he walks through the hallways.

No one has more fun at Golden Knights practice than Marchessault, and the top-line winger has taken a leadership role on and off the ice in Vegas. The playful yet hard-working demeanor he brings to the rink every day exudes everything Gerard Gallant wants his team to be.

Marchessault leads the team with six goals and 11 points through 11 games, and scored perhaps the biggest goal to this point in the season Sunday night at T-Mobile Arena.

He was hauled down by an Ottawa Senators’ defender during a breakaway attempt in overtime and was awarded a penalty shot. Marchessault skated in slowly, sized goaltender Craig Anderson up and fired the shot beneath the...